JPS59197694A - Method of repairing fluid facility - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for repairing a leakage portion, or a location at risk thereof, that occurs in fluid equipment such as a storage, tank, or piping.

In general, in fluid equipment such as storage tanks and piping that contain contents such as gases, liquids, or flowable particles, corrosion may occur not only on the inside surface where the contents exist, but also on the outside surface due to weather conditions. There is. In addition, loads due to internal pressure and wind 4 [
When high stress is generated due to such factors, defects such as corrosion tend to be accelerated. Furthermore, it is difficult to repair by welding due to flammable contents or the environment, and short-term repairs are often required. Conventionally, the parts that require repair have been repaired using epoxy resin, for example, but this method has drawbacks such as poor strength and poor reliability due to deterioration caused by ultraviolet rays, etc. have.

Therefore, an object of the present invention is to provide a method for repairing fluid equipment that eliminates such conventional drawbacks, maintains sufficient strength, and is highly reliable.

According to this invention, in order to repair leakage or deteriorated parts of fluid equipment such as storage tanks and piping, the method for repairing fluid equipment covers the repaired parts with resin-impregnated glass fibers and inserts a plurality of small holes. The process consists of bonding a thin bonded plate provided with the glass fibers under pressure onto the glass fibers, and curing the resin.

Other objects, features and advantages of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 shows a first method of repairing fluid equipment according to the present invention.
An example is shown below. In this example, the piping has a repair part such as a leakage part or a part that requires reinforcement. Multi-layer coating 9 is applied to the repaired portion of the pipe 1 using an epoxy resin impregnated with glass fiber, that is, 111'RP, depending on the condition of the repaired portion to form an FRP layer. Immediately after this, a bonding plate 3 made of a thin metal plate, a plastic plate, or the like is wrapped over the FRP layer, temporarily secured with a band or wire, and bonded under pressure, and waiting for the FRP layer 2 to harden. The joint plate 3 has a plurality of small holes with a diameter of about 3 mm to 3 mm at regular intervals, and these small holes are filled with resin from the FRP layer, resulting in FR.
Peeling of the joint plate 3 from the P layer is prevented, and the strength of the joint plate 3 can be maintained.

Figure 2 shows a first embodiment according to the present invention, in which leakage occurs on surfaces such as curved surfaces and flat surfaces where it is impossible to wrap the joint plate with 7 pieces of FRP such as storage tanks and fluid equipment with complicated shapes. Methods for repairing parts and deteriorated parts are shown. In this first embodiment, forming an FRP layer/2 on the repaired portion and bonding the bonding plate 13 having small holes under pressure is the same as in the first embodiment, but the bonding plate/3 is made in advance to match the surrounding surface of a part of the structure in accordance with the shape of the structure.

As described above, according to the repair method of the present invention, the strength of the FRP layer is higher than that of the conventional six pieces made only of resin, and by bonding the bonding plate over the FRP layer under pressure, it is possible to The strength of the FRP layer can be further increased to withstand stress such as internal pressure, and therefore leakage from the repaired area or progression of deterioration can be prevented. Further, a plurality of small holes provided at regular intervals in the bonding plate are filled with the resin of the FRP layer, so that the bonding plate and the FRP layer are integrated, and peeling of the bonding plate is prevented. Moreover, since the bonding plate has an FRP layer, it can prevent deterioration due to external environment such as ultraviolet rays, and can improve the multiplicity of paint when painting.

By using FRP and bonded plates in this way, there are many effects such as being able to perform strong repairs without using fire.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing the repair of piping according to the fluid equipment repair method of the present invention, and FIG. 2 is a schematic explanatory diagram showing the repair method on a surface such as a storage tank surface. In the figure, /: piping, ko, l koni FRP layer, 3. /3: joint plate, +, /g: small hole. Patent applicant: Toyo Kanetsu Co., Ltd. Figure 1

Claims (1)

[Claims] In order to repair leaking or deteriorated parts of fluid equipment such as storage tanks and piping, the repaired parts are covered with resin-impregnated glass fibers, and a thin plate bonded plate with a plurality of small holes is attached to the glass fibers. A method of repairing fluid equipment that consists of bonding under pressure over the fibers and curing the resin.